Saturday, December 12, 2015

solve the system (x^3)(y^3)(z^4)=1 and (x^2)(y^4)(z^4)=2 and (x^2)(y^3)(z^5)=3

`(x^3)(y^3)(z^4)=
1................(1)`


`(x^2)(y^4)(z^4)=
2..................(2)`


`(x^2)(y^3)(z^5)= 3
....................(3)`


First, we will divide (1) by
(2).


==> `x/y = 1/2 ==> y= 2x
..................(4)`


``Now we will divide (1) by
(3).


`==> x/z = 1/3 ==> z =
3x...................(5)`


Now, we will substitute (5) and
(5) into (1).


`==> (x^3)(y^3)(z^4) =
1`


`==> (x^3)(2x)^3 (3x)^4 =
1`


`==> (x^3)(8x^3)(81x^4)=
1`


`==> 648x^10 =
1`


`==> x^10 =
1/648`


`==> x =
(1/648)^(1/10)`


`==> y= 2x =
2/(648)^(1/10)`


`==> z= 3x = 3/
648^(1/10)`


``

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